sticker vs bookplate

sticker and bookplate both are nouns.

Word	Noun	Adjective	Verb	Adverb
sticker	Yes	No	No	No
bookplate	Yes	No	No	No

As nouns, bookplate is a hyponym of sticker; that is, bookplate is a word with a more specific, narrower meaning than sticker:

Other hyponyms of sticker include ex libris.

sticker (noun)	bookplate (noun)
a short knife with a pointed blade used for piercing or stabbing	a label identifying the owner of a book in which it is pasted
an adhesive label
a particularly difficult or baffling question or problem
a small sharp-pointed tip resembling a spike on a stem or leaf